# Latest

**URL:** https://discourse.nodered.org/latest.md?page=500

[Latest](https://discourse.nodered.org/latest.md) · [Categories](https://discourse.nodered.org/categories.md) · [Tags](https://discourse.nodered.org/tags.md)

**Page:** 501

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## [Creating nodes in node-red containers](https://discourse.nodered.org/t/creating-nodes-in-node-red-containers/67643)

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**Author:** [@elvisj007](https://discourse.nodered.org/u/elvisj007)\
**Replies:** 4\
**Last updated:** [13 September 2022 16:16 UTC](https://discourse.nodered.org/t/creating-nodes-in-node-red-containers/67643 "2022-09-13T16:16:30Z")

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I want to create new nodes and install them to the "node\_modules" in a node-red docker container running on my system. How can i do this? I am familiar with creating and packaging new nodes in Node-red installed locally…

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## [\[node-red-contrib-iiot-opcua\] Listener node gives encode error when "Send Just Values" is disabled](https://discourse.nodered.org/t/node-red-contrib-iiot-opcua-listener-node-gives-encode-error-when-send-just-values-is-disabled/67660)

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**Author:** [@elyancorrea](https://discourse.nodered.org/u/elyancorrea)\
**Replies:** 0\
**Last updated:** [13 September 2022 15:01 UTC](https://discourse.nodered.org/t/node-red-contrib-iiot-opcua-listener-node-gives-encode-error-when-send-just-values-is-disabled/67660 "2022-09-13T15:01:23Z")

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Hi, I'm trying to subscribe Prosys OPC UA Simulation Server 5.2.2 simulation folder just using iiot-opcua nodes. Using a "read node" I can read all values from tags of simulation folder but when I try to subscribe same …

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## [Mass-changing UI nodes on a flow import](https://discourse.nodered.org/t/mass-changing-ui-nodes-on-a-flow-import/66571)

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**Author:** [@Rgrove](https://discourse.nodered.org/u/Rgrove)\
**Replies:** 9\
**Last updated:** [13 September 2022 14:38 UTC](https://discourse.nodered.org/t/mass-changing-ui-nodes-on-a-flow-import/66571 "2022-09-13T14:38:37Z")

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Hi all. How can I make mass changes to the UI Dashboard node groups? If I have 20 Text UI nodes, and I want to change them all to a different dashboard tab and group, is there a way to do that with a msg.property? Her…

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## [Dashboard-template-node prints incoming msg on its own](https://discourse.nodered.org/t/dashboard-template-node-prints-incoming-msg-on-its-own/67656)

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**Author:** [@JustinB](https://discourse.nodered.org/u/JustinB)\
**Replies:** 2\
**Last updated:** [13 September 2022 13:41 UTC](https://discourse.nodered.org/t/dashboard-template-node-prints-incoming-msg-on-its-own/67656 "2022-09-13T13:41:43Z")

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Hello people, I'm currently implementing a tabulator-table to my node-RED-dashboard and facing a weird issue. The table imports a JSON which is pulled from a database. The data is getting imported and everything is fin…

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## [Modbus RTU problem reading address](https://discourse.nodered.org/t/modbus-rtu-problem-reading-address/67219)

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**Author:** [@jmm](https://discourse.nodered.org/u/jmm)\
**Replies:** 6\
**Last updated:** [13 September 2022 12:38 UTC](https://discourse.nodered.org/t/modbus-rtu-problem-reading-address/67219 "2022-09-13T12:38:10Z")

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Hi everyone, I am using a IoT2050 in order to get data from a temperature controller (the attached document contains the controller's manual). The problem comes when I try to read the registers. The error I get is: "Er…

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## [Steps to create a custom node package for offline installation](https://discourse.nodered.org/t/steps-to-create-a-custom-node-package-for-offline-installation/55624)

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**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 11\
**Last updated:** [13 September 2022 09:29 UTC](https://discourse.nodered.org/t/steps-to-create-a-custom-node-package-for-offline-installation/55624 "2022-09-13T09:29:30Z")

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Hi folks, I am absolutely not an NPM expert, so I had some trouble to help @bogi in another discussion. He needed to have a package of my custom node to install it in an offline Node-RED system. Don't know if my way …

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## [Can't login to NR UI](https://discourse.nodered.org/t/cant-login-to-nr-ui/67518)

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**Author:** [@Venderwel](https://discourse.nodered.org/u/Venderwel)\
**Replies:** 3\
**Last updated:** [13 September 2022 09:31 UTC](https://discourse.nodered.org/t/cant-login-to-nr-ui/67518 "2022-09-13T09:31:21Z")

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Hi there, node red noob here needs some help. When I try to open the UI it's promting me to login. I fill in the username and password I set in configuration, but it keeps promting. What am I doing wrong?

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## [Node Red very Slow](https://discourse.nodered.org/t/node-red-very-slow/67640)

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**Author:** [@ALPF5555](https://discourse.nodered.org/u/ALPF5555)\
**Replies:** 8\
**Last updated:** [13 September 2022 09:05 UTC](https://discourse.nodered.org/t/node-red-very-slow/67640 "2022-09-13T09:05:50Z")

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Hello Everyone I am having Issues with Node Red.. It appears to be the same issue on at least 6 Raspberry Pi 4B models that I am running Node Red on. The Issue is the screen and moving Nodes etc is very slow.. It takes…

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## [Dashboard notification OK/Cancel dialog with input wont send the value "1"](https://discourse.nodered.org/t/dashboard-notification-ok-cancel-dialog-with-input-wont-send-the-value-1/67592)

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**Author:** [@stgj](https://discourse.nodered.org/u/stgj)\
**Replies:** 7\
**Last updated:** [13 September 2022 08:57 UTC](https://discourse.nodered.org/t/dashboard-notification-ok-cancel-dialog-with-input-wont-send-the-value-1/67592 "2022-09-13T08:57:13Z")

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Hi. I have a problem with the Dashboard Notification node. I choose "OK/Cancel dialog with input". The description sys that this notification will send the value from the user input in msg.payload. But when I try to e…

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## [Best approach to handle multiple api calls during a http in flow](https://discourse.nodered.org/t/best-approach-to-handle-multiple-api-calls-during-a-http-in-flow/67641)

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**Author:** [@dvsctt](https://discourse.nodered.org/u/dvsctt)\
**Replies:** 3\
**Last updated:** [13 September 2022 08:22 UTC](https://discourse.nodered.org/t/best-approach-to-handle-multiple-api-calls-during-a-http-in-flow/67641 "2022-09-13T08:22:50Z")

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Hi, Im looking for advice on best way to handle multiple api requests triggered by an incoming http post. Sample scenario- HTTP In node A accepts a POST with some data Call api service B (GET) to lookup data from pay…

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## [Use template as function (to merge multiple PDFs into one PDF)](https://discourse.nodered.org/t/use-template-as-function-to-merge-multiple-pdfs-into-one-pdf/67474)

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**Author:** [@smitterer](https://discourse.nodered.org/u/smitterer)\
**Replies:** 4\
**Last updated:** [13 September 2022 08:02 UTC](https://discourse.nodered.org/t/use-template-as-function-to-merge-multiple-pdfs-into-one-pdf/67474 "2022-09-13T08:02:35Z")

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Hi everyone, @bakman2 helped me using a npm module in a function node, which is now working (Useage of contrib-npm) I now have to dynamically change the files which need to be merged. Therefore I'm using some change no…

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## [Can't find "Manage Palette" on the menu](https://discourse.nodered.org/t/cant-find-manage-palette-on-the-menu/67635)

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**Author:** [@uhei](https://discourse.nodered.org/u/uhei)\
**Replies:** 2\
**Last updated:** [13 September 2022 07:49 UTC](https://discourse.nodered.org/t/cant-find-manage-palette-on-the-menu/67635 "2022-09-13T07:49:50Z")

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Hello everybody, I'm currently trying to get Node-RED (3.0.2) to run inside Electron (23.3.3). I'm making an app based on Dceejay's "electron-node-red". (GitHub - dceejay/electron-node-red: Electron Node-RED template) …

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## [Can I get node ancestors?](https://discourse.nodered.org/t/can-i-get-node-ancestors/67420)

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**Author:** [@dvsctt](https://discourse.nodered.org/u/dvsctt)\
**Replies:** 5\
**Last updated:** [13 September 2022 06:32 UTC](https://discourse.nodered.org/t/can-i-get-node-ancestors/67420 "2022-09-13T06:32:04Z")

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Hi all, Im playing around, trying out functionality. Is there a way to access a nodes ancestors? Specifically the last node that triggered the current node? Generally the node trail from initation? thanks in advance …

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## [Accumulate a value that sometimes resets - pls check my code](https://discourse.nodered.org/t/accumulate-a-value-that-sometimes-resets-pls-check-my-code/67533)

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**Author:** [@VinistoisR](https://discourse.nodered.org/u/VinistoisR)\
**Replies:** 9\
**Last updated:** [13 September 2022 02:38 UTC](https://discourse.nodered.org/t/accumulate-a-value-that-sometimes-resets-pls-check-my-code/67533 "2022-09-13T02:38:35Z")

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I have a value that comes in from an api representing the number of kilometers a machine has driven. But sometimes, the mileage gets reset at the edge and starts again from zero. I need to continue to accumulate the va…

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## [One node inputs output only if inputs are different](https://discourse.nodered.org/t/one-node-inputs-output-only-if-inputs-are-different/67628)

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**Author:** [@hugovsky](https://discourse.nodered.org/u/hugovsky)\
**Replies:** 10\
**Last updated:** [12 September 2022 22:53 UTC](https://discourse.nodered.org/t/one-node-inputs-output-only-if-inputs-are-different/67628 "2022-09-12T22:53:15Z")

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Hi all. I've searched and couldn't find a solution to my problem. I think it should be easy but can't figure it out on my own. Just starting with node-red. I'm using it with home assistant. I have a poll state node that…

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## [NodeRed, ESP32, Tasmota, photovoltaic installation and control 3 heaters](https://discourse.nodered.org/t/nodered-esp32-tasmota-photovoltaic-installation-and-control-3-heaters/67544)

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**Author:** [@wachcio](https://discourse.nodered.org/u/wachcio)\
**Replies:** 6\
**Last updated:** [12 September 2022 22:36 UTC](https://discourse.nodered.org/t/nodered-esp32-tasmota-photovoltaic-installation-and-control-3-heaters/67544 "2022-09-12T22:36:18Z")

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Hello Using ESP32 with Tasmota and NodeRed software, I want to control 3 heaters (2kV - domestic hot water, 4.2kV and 6kV - heating the house in winter). I also have a photovoltaic installation with a Fronius inverter. …

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## [Define a function within a function and pass an object, forEach](https://discourse.nodered.org/t/define-a-function-within-a-function-and-pass-an-object-foreach/67624)

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**Author:** [@VinistoisR](https://discourse.nodered.org/u/VinistoisR)\
**Replies:** 10\
**Last updated:** [12 September 2022 22:03 UTC](https://discourse.nodered.org/t/define-a-function-within-a-function-and-pass-an-object-foreach/67624 "2022-09-12T22:03:20Z")

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I have an array in a flow variable like this: I want to cycle through each of the objects in the array, and send out a new message for each one, using some values from the objects to build the new message. let machi…

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## [How to do input validation?](https://discourse.nodered.org/t/how-to-do-input-validation/67623)

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**Author:** [@campot05](https://discourse.nodered.org/u/campot05)\
**Replies:** 3\
**Last updated:** [12 September 2022 20:09 UTC](https://discourse.nodered.org/t/how-to-do-input-validation/67623 "2022-09-12T20:09:19Z")

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Guys, I'm just learning, please tell me how can I check the input data? I need to check the input data, whether the phone number is correct according to the following parameters: format is "380..." only numbers number …

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## ["Error: Invalid action specified" from MQTT node](https://discourse.nodered.org/t/error-invalid-action-specified-from-mqtt-node/67619)

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**Author:** [@hazymat](https://discourse.nodered.org/u/hazymat)\
**Replies:** 1\
**Last updated:** [12 September 2022 17:11 UTC](https://discourse.nodered.org/t/error-invalid-action-specified-from-mqtt-node/67619 "2022-09-12T17:11:26Z")

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Hi, after upgrading from 2.0.4 to 3.0.2, I'm getting an error in Debug sidebar from an MQTT output node. This MQTT output node exists within a subflow template, which always worked before. Here's the message as it enters…

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## [Decimals places](https://discourse.nodered.org/t/decimals-places/67618)

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**Author:** [@Erissin\_Industria4.0](https://discourse.nodered.org/u/Erissin_Industria4.0)\
**Replies:** 6\
**Last updated:** [12 September 2022 16:46 UTC](https://discourse.nodered.org/t/decimals-places/67618 "2022-09-12T16:46:51Z")

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How to leave only two decimal places after the comma?

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## [How to un-disable error checking for function nodes?](https://discourse.nodered.org/t/how-to-un-disable-error-checking-for-function-nodes/67614)

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**Author:** [@hazymat](https://discourse.nodered.org/u/hazymat)\
**Replies:** 2\
**Last updated:** [12 September 2022 16:30 UTC](https://discourse.nodered.org/t/how-to-un-disable-error-checking-for-function-nodes/67614 "2022-09-12T16:30:28Z")

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Since upgrading to 3.0.2 and finally changing to Monaco in my settings.json, I now find myself with approximately one trillion functions nodes that I hacked together badly, and when I close them they now give errors. Mai…

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## [Search for function nodes with certain code?](https://discourse.nodered.org/t/search-for-function-nodes-with-certain-code/67612)

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**Author:** [@hazymat](https://discourse.nodered.org/u/hazymat)\
**Replies:** 6\
**Last updated:** [12 September 2022 16:26 UTC](https://discourse.nodered.org/t/search-for-function-nodes-with-certain-code/67612 "2022-09-12T16:26:25Z")

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Love the new junction node. Previously I used function nodes for this purpose, i.e. just created a function node with return msg; In all the new snazziness, is there a way to search for function nodes that just contain …

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## [Multiple chart lines from single array](https://discourse.nodered.org/t/multiple-chart-lines-from-single-array/67616)

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**Author:** [@becsL](https://discourse.nodered.org/u/becsL)\
**Replies:** 4\
**Last updated:** [12 September 2022 16:20 UTC](https://discourse.nodered.org/t/multiple-chart-lines-from-single-array/67616 "2022-09-12T16:20:55Z")

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Hi there, I am losing my mind staring at this one problem and I think I am oh so very close but I just can't crack this nut. I think there is the need for a 'For Loop' within a 'For Loop'. Hopefully you can help! What I…

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## [Write Data to database in interval](https://discourse.nodered.org/t/write-data-to-database-in-interval/67485)

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**Author:** [@Janaros](https://discourse.nodered.org/u/Janaros)\
**Replies:** 5\
**Last updated:** [12 September 2022 15:10 UTC](https://discourse.nodered.org/t/write-data-to-database-in-interval/67485 "2022-09-12T15:10:48Z")

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Hello, I have the following problem: I get data sent every second via MQTT. However, I only want to write this data to the database every 30 seconds, otherwise it will become too large. Currently, the data comes in v…

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## [How can I use values in an array inside of an object inside of an array as a condition?](https://discourse.nodered.org/t/how-can-i-use-values-in-an-array-inside-of-an-object-inside-of-an-array-as-a-condition/67591)

<div class="topic-metadata">

**Author:** [@arretx](https://discourse.nodered.org/u/arretx)\
**Replies:** 7\
**Last updated:** [12 September 2022 14:46 UTC](https://discourse.nodered.org/t/how-can-i-use-values-in-an-array-inside-of-an-object-inside-of-an-array-as-a-condition/67591 "2022-09-12T14:46:56Z")

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This payload is coming from an RSS feed being read by the Home Assistant RSS Feed Reader integration. I have a node watching the event bus, filtering out all messages that don't have the event\_type feedreader. The idea…

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## [Assistance required - Dashboard Dynamic button that can Appear/Disapear on true or false variable](https://discourse.nodered.org/t/assistance-required-dashboard-dynamic-button-that-can-appear-disapear-on-true-or-false-variable/67608)

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**Author:** [@Wayne](https://discourse.nodered.org/u/Wayne)\
**Replies:** 2\
**Last updated:** [12 September 2022 14:44 UTC](https://discourse.nodered.org/t/assistance-required-dashboard-dynamic-button-that-can-appear-disapear-on-true-or-false-variable/67608 "2022-09-12T14:44:50Z")

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Hi NodeRed guru's, Really love this project. Hopefully this is a simple thing but ultimately what I am after is a dashboard button that will appear when for example a scheduled flow runs (for example a reminder) and on…

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## [Wires not showing in UI after being saved from API Call](https://discourse.nodered.org/t/wires-not-showing-in-ui-after-being-saved-from-api-call/67409)

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**Author:** [@jdonkinMotiv](https://discourse.nodered.org/u/jdonkinMotiv)\
**Replies:** 5\
**Last updated:** [12 September 2022 14:34 UTC](https://discourse.nodered.org/t/wires-not-showing-in-ui-after-being-saved-from-api-call/67409 "2022-09-12T14:34:38Z")

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I build my flows dynamically using the POST /flow to save them into Node Red. If I view the saved node after the call in the UI I am missing the wires for the created node. If I keep node red closed I can run my workfl…

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## [Excel separar columna-node-red](https://discourse.nodered.org/t/excel-separar-columna-node-red/67524)

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**Author:** [@Mariano](https://discourse.nodered.org/u/Mariano)\
**Replies:** 4\
**Last updated:** [12 September 2022 14:18 UTC](https://discourse.nodered.org/t/excel-separar-columna-node-red/67524 "2022-09-12T14:18:17Z")

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Hello, I wanted to save the voltage data to an excel with the date and time, but they are stored in the same column, does anyone know how to separate them?

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## [Strange Errors after loading Telegram Bot](https://discourse.nodered.org/t/strange-errors-after-loading-telegram-bot/67606)

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**Author:** [@gregoinc](https://discourse.nodered.org/u/gregoinc)\
**Replies:** 1\
**Last updated:** [12 September 2022 12:02 UTC](https://discourse.nodered.org/t/strange-errors-after-loading-telegram-bot/67606 "2022-09-12T12:02:21Z")

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Hello, I was playing around with the telegram bot and seem to have got myself and my node red system into a strange place. To the point where I cannot remove the telegram bot, and receive unusual error messages. In the…

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## [Duplicate flows automated in runtime](https://discourse.nodered.org/t/duplicate-flows-automated-in-runtime/67168)

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**Author:** [@JustinB](https://discourse.nodered.org/u/JustinB)\
**Replies:** 9\
**Last updated:** [12 September 2022 07:27 UTC](https://discourse.nodered.org/t/duplicate-flows-automated-in-runtime/67168 "2022-09-12T07:27:23Z")

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Hey, I'm currently working on a project to get and save data from a control device. I've set up everything in the dashboard, so you can do measurements, save the data into a database, convert the data to csv, download it…

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